AEMS PRO X2 enhances the AEMS platform by improving accuracy through an advanced optical system that reduces parallax by 50%. AEMS X2 PRO also introduces a forward-facing light sensor creating a smarter AUTO Mode that improves dot contrast in dynamic lighting conditions while in AUTO Mode. AEMS X2 PRO also includes a new anti-reflective device and an all-new four post, lower 1/3 co-witness mount. AEMS X2 PRO remains backwards compatible with original AEMS mounts. Features: Solar Failsafe allows the red dot sight to remain powered when your battery fails. Superled Multilayer Reflective Glass Titanium Housing In the Box: 1x AEMS-PRO-X2-RD Optic 1x 1.63 in Optic Mount 1x Anti-Reflection Device Front Lens Insert 1x Clear Front Lens Insert 1x Multi-tool 1x Wrench 1x Cleaning Cloth